Collapsible metallic structure.



J. 0. ELLINGER COLLAPSIBLE METALLIC STRUCTURE. APPLICATION HLEI) 0011 5.1912.

'L MQAQSQ Patented May 25,1915.

WITNESSES so p elevation of the structure in its expanded JULIAN O.ELLINGER, 0F NEIV YORK, N. Y.

COLLAPSIBLE METALLIC STRUCTURE.

Application filed October 15, 1912.

To all whom it may concern Be it known that I, JULIAN O. ELLINGER, acitizen of the United States, and a resident of the borough ofManhattan, city and State of New York,.have invented certain new anduseful Improvements in Collapsible Metallic Structures, of which thefollowing is a specification.

This invention relates to skeleton structures fabricated of metallicmembers adapted to be used as columns or beams in concretereinforcements and consists of the novel features hereinafter set forthand illustrated in the accompanying drawing.

One of the objects of the invention is to provide such a structurecomposed of a series of longitudinal members arranged in angularrelation to each other and having members pivotally connecting the samein such manner that the structure may be collapsed and stored ortransported and may be readily opened out to its expanded condition foruse.

inafter description One specific form of the invention is illustrated inthe accompanying drawing.

Referring to the drawing in which the same reference character indicatesthe same art in the several views: Figure 1 is a side form. Fig; 2 is across section of the same on line 2 of Fig. 1. Fig. 3 is a perspectiveview of one of the pivoted cross members. Fig. 4 is a cross sectionalview of the structure in its collapsed form.

In the illustration the structure is square in cross section although itmay be of other suitable polygonal shape. The parts marked 10, 11, 12and 13 on the drawing represent longitudinal members arranged at thecorners of the angles of a square or rectangle when expanded. Thelongitudinal members 10 and 12 are connected together by a series ofcross members 14: which are spaced apart and provided with weldingprojections 14:, by which the ends thereof are rigidly secured to saidlongitudinal members 10 and 12, preferably by electric welding. Theopposite longitudinal members 11 and 13 are also connected together by aseries of cross members 15, spaced apart and provided with weldingprojections 15. 16 is another series of cross members, one end 16 ofwhich is formed into an eye which surrounds the iongitudinal member 10,and extends over one Specification of Letters Patent.

Other objects will appear from the here- Patented May 251, 1915.

Serial No. 725,795.

end of the cross member 14:. The other end 16 is similarly formed intoan eye which surrounds the longitudinal member 11 and one end of thecross member 15. 17 is another series of pivoted cross members the ends,17 and 17*, of which respectively are turned aroundthe longitudinalmembers 12 and 13 and span the respective ends of the cross members 1-1and 15 adjacent to the longitudinal members 12 and 13. There may also beprovided additional longitudinal members 20 and 21 which are rigidlysecured to the respective cross members 14 and 15 about midway of thelatter. construction may also be provided with additional longitudinalmembers 18 and 19. When said members are provided the pivoted crossmembers 16 and 17 intermediate the ends thereof may be turned'into eyes16 and 17 which loosely surround and form piv-- otal connections withthe longitudinal members 18 and 19.] The constructio'n is such that whenthe diagonally Having now described my invention what I claim as new anddesire to secure by Letters Patent is:

1. In a device of the class described, a series of parallel longitudinalmembers, a series of cross members spaced apart and having their endsrigidly connected to a pair of said longitudinal members, another seriesof cross members spaced apart located opposite the first mentioned crossmembers and having their ends rigidly connected to a second pair oflongitudinal members, third series of crossmembers spaced apart havingeach-end turned around the adjacent longitudinal members of each pairand also around the adjacent ends of the respective rigid members, afourth series 'of cross members opposite the'last mentioned cross This70 opposite corner members 10 and 13 or 11 and 12 are brought 80- to theposition shown 85 yet it is 90 5 'otal connection with the longitudinalmembers,- 1

2. Ina device of the class described; a series of parallel longitudinalmembers, a series of cross'members spaced apart and hav-. ing their endsrigidly connected to a pair of 'said longitudinal members, anotherseries of cross members spaced apart located. opposite the firstmentioned cross members and having their ends rigidlyconnected to asecond pair of longitudinal members, a third series of cross membersspaced apart having each end turned around the adjacentlongitudinalmembers of each pair and also around the adjacent ends ofthe respective rigid members to form' pivotal connections, a fourthseries of cross members oppositethe last-mentioned cross members,also-having their ends turned around the opposite longitudinal membersto form pivotal connections, a longitudinal member between the 'firstpair of longitudinal members rigidly connected to the first mentionedcross members,.another longitudinal member located between the secondpair of longitudinal mentioned series of cross members, andlongitudin'al'members intermediate the ends of the respective series ofpivoted cross members, each of said cross members being provided witheyes intermediate the ends thereof to loosely receive the last mentionedlon gitudinal members.

3. In a collapsible metallic reinforcement for concrete, side framescomprising longitudinal and transverse members rigidly united togetherand independent members members and rigidly connected to the secondpivotally connecting said side frames to each 'other whereby one pair ofthe diagonally opposed longitudinal members will collapse toward eachother.

.4. In a colapsible metallic reinforcement for concrete columns, thecombination of spaced apart parallel longitudinal bars arlongitudinalmembers arranged in pairs,

transverse members welded to the members of each pair to form separaterigid frames and straps pivotally connecting said frames by onelongitudinal member of each pair approachingone longitudinal member ofthe other pair and the other longitudinal members will move away fromeach other.

.6; In a collapsible metallic reinforcement for concrete columns, sideframes comprising longitudinaland transverse bars secured together andindependent'members pivotally connecting said sideframes whereby saidside frames will collapse toward each other without increasing thelength of the structure when collapsed.

. In witness whereof I have hereunto set my hand at the borough ofManhattan, State'of New York, this 18th day 19 12.

city and of June,

JULIAN O. ELLINGER.

In presence of- I JOHN J. RANAGAN, M. N. DIKEMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

60 together whereby the structure .will collapse

